Superior growth orientation control via ZnO doping of large-grain LRE-Ba2Cu3Oy compounds grown with MgO seeds

Muralidhar Miryala, T. Kono, M. Jirsa, Naomichi Sakai, Masato Murakami, I. Hirabayashi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

MgO seeds proved to be efficient in the growth orientation control of large grain LREBa2Cu3Oy 'LRE-123' pellets when a small quantity of ZnO was added, accompanied by a substantial reduction of liquid phase loss. Perfect facet lines grown up to the pellet bottom demonstrated excellent melt growth. Field distribution contour maps at the top and bottom surfaces were nearly identical. Magnetization measurements indicated that flux pinning performance continuously improved with increasing ZnO content up to 0.035 mol%, with critical current density reaching 100 kA cm-2 at 3 T (77 K). Microstructure analysis by scanning tunnelling microscopy and dynamic force microscopy proved the superior microstructure of the material, consistent with the other characteristics.

Original languageEnglish
JournalSuperconductor Science and Technology
Volume19
Issue number7
DOIs
Publication statusPublished - 2006 Jul

Fingerprint

pellets
Seed
seeds
Doping (additives)
Flux pinning
microstructure
Microstructure
flux pinning
Scanning tunneling microscopy
scanning tunneling microscopy
flat surfaces
Magnetization
critical current
Microscopic examination
liquid phases
current density
microscopy
magnetization
Liquids

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

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title = "Superior growth orientation control via ZnO doping of large-grain LRE-Ba2Cu3Oy compounds grown with MgO seeds",
abstract = "MgO seeds proved to be efficient in the growth orientation control of large grain LREBa2Cu3Oy 'LRE-123' pellets when a small quantity of ZnO was added, accompanied by a substantial reduction of liquid phase loss. Perfect facet lines grown up to the pellet bottom demonstrated excellent melt growth. Field distribution contour maps at the top and bottom surfaces were nearly identical. Magnetization measurements indicated that flux pinning performance continuously improved with increasing ZnO content up to 0.035 mol{\%}, with critical current density reaching 100 kA cm-2 at 3 T (77 K). Microstructure analysis by scanning tunnelling microscopy and dynamic force microscopy proved the superior microstructure of the material, consistent with the other characteristics.",
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T1 - Superior growth orientation control via ZnO doping of large-grain LRE-Ba2Cu3Oy compounds grown with MgO seeds

AU - Miryala, Muralidhar

AU - Kono, T.

AU - Jirsa, M.

AU - Sakai, Naomichi

AU - Murakami, Masato

AU - Hirabayashi, I.

PY - 2006/7

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N2 - MgO seeds proved to be efficient in the growth orientation control of large grain LREBa2Cu3Oy 'LRE-123' pellets when a small quantity of ZnO was added, accompanied by a substantial reduction of liquid phase loss. Perfect facet lines grown up to the pellet bottom demonstrated excellent melt growth. Field distribution contour maps at the top and bottom surfaces were nearly identical. Magnetization measurements indicated that flux pinning performance continuously improved with increasing ZnO content up to 0.035 mol%, with critical current density reaching 100 kA cm-2 at 3 T (77 K). Microstructure analysis by scanning tunnelling microscopy and dynamic force microscopy proved the superior microstructure of the material, consistent with the other characteristics.

AB - MgO seeds proved to be efficient in the growth orientation control of large grain LREBa2Cu3Oy 'LRE-123' pellets when a small quantity of ZnO was added, accompanied by a substantial reduction of liquid phase loss. Perfect facet lines grown up to the pellet bottom demonstrated excellent melt growth. Field distribution contour maps at the top and bottom surfaces were nearly identical. Magnetization measurements indicated that flux pinning performance continuously improved with increasing ZnO content up to 0.035 mol%, with critical current density reaching 100 kA cm-2 at 3 T (77 K). Microstructure analysis by scanning tunnelling microscopy and dynamic force microscopy proved the superior microstructure of the material, consistent with the other characteristics.

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